CALGARY - Calgary police say two charges of first-degree murder and one charge of second-degree murder are pending in the disappearance of a five-year-old boy and his grandparents.

Chief Rick Hanson says a man has been arrested but he can't identify him because the charges have not been officially laid.

Nathan O'Brien and his grandparents, Kathryn and Alvin Liknes, haven't been seen since June 29 after what police say was a violent incident in the Liknes house.

Hanson says their bodies have not been found, but an Amber Alert issued shortly after they were reported missing has been cancelled.

The chief says the man arrested is from Airdrie, a community north of Calgary.

He would not confirm that it's Douglas Garland, who lives on an Airdrie acreage with his parents and has been identified as a person of interest in the case.
Graland was first questioned more than a week ago and was released from custody last Friday on unrelated identity theft charges.

Media reports citing police sources say Garland was re-arrested Monday.

Garland, who is 54, has ties to the Liknes family.

Police have said his sister is in a relationship with a family member and there have been reports he had business dealings with Alvin Liknes as well.

Investigators have been searching the Garland acreage northeast of Airdrie where since he was initially questioned.

Over the past two weeks RCMP and Calgary police have searched several fields, sloughs and stands of trees on the acreage and in an area nearby.